Horrific LED tester that can literally kill you - (with scary schematic)
256,102
Published 2024-05-22
There are safer units available that convert the incoming power to an isolated and current limited supply, but this one pretty much puts full mains voltage straight out.
The bizarre LED dangling through a ragged hole in the ungrounded case may actually be a crude FUSE! Because if the positive lead touches grounded metalwork there will literally be a dead short, with just the internal rectifier and the LED in series with the mains supply. LEDs do actually make surprisingly good fuses due to having a microscopic encapsulated bond wire. They do sometimes blow in half though... Sadly, the LED will not save you from electrocution. It takes much less current to kill a human than to blow an LED bond wire.
Technically speaking they could have made a marginally safer unit by putting a capacitor on each leg of the supply and limiting the current to a much lower level. Even high power resistors could have been used for that. It would still pose a shock risk, but with much less chance of being fatal. But for a proper reliability test on a faulty LED panel a higher current may be useful.
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All Comments (21)
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A circuit designed to protect itself by blowing out the human connected to it.
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Loved the brass screwdriver rolling towards the live probe, really brought suspense & excitement.
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that little LED hanging out the front...wow and I love the switch that might easily give the impression that the unit is switched off and """safe""" in the 0 position, when its 100% very much not even slightly off at all
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I have two ebay-rules: 1. Never purchase things for wall outlet 2. Never purchase things for your mouth
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If the price was lower " Like $1 dollar" it would be good for the metal case.
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Plugging in an ungrounded metal case appliance with Chinese writing all over it is a game I like to call Shaking Hands with Jeebuz because he may simply say "hi," or he may recall you to heaven.
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I'm constantly impressed at your ability to continue finding the shoddiest of devices to share with us.
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You can tell the danger level on the “Clive Chortling Scale”. I think we hit 9.9.
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£11.40 for death? Pah, make them an offer, should get death for a tenner , no more.
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The “human as fuse” tester, nice!
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I love the translated text in the box at the left side of the label: "(Please look for professional and authentic products with guaranteed quality, and be careful of counterfeit and shoddy products)".
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I love the utter joy in your voice when you see how dangerous this item is.
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Everything about that death-tester is amazing! It has it all: Ungrounded metal case, switch, random connector sticking through the side, banana terminals
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I just checked ebay and found a deluxe version with an LED voltage display that proudly displays "11th Heneration" on the front panel. Eleven attempts and they couldn't even get the spelling right, so chances of it being equally dangerous seem pretty high.
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So the probe's live and "off" is on? Nice.
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"It was the best of starts, it was the worst of starts" - Clive, Big (scared to bits) It had me grinning all along XD
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It is beyond belief that people would think that it is ok to sell something with the wires just hanging out, and a socket on the end. WTF. beside the fact that it is also a death trap.
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Let me open this up … one screw … two screws … three screws … a great night out.
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It's a bit like a billion monkeys set loose in an electronics factory. Eventually, one working product will do something that passes as working. Just not this one.
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Maybe the box can also be used for an urn for your ashes. 😂😂😂
